countrygirl1431
  • countrygirl1431
Solve the following equation, answer as a reduced, mixed number. Then place the correct number in the box provided. 7(x -2) + 3(x + 2) = 5(x - 6)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
You multiply 7 with x and -2, and 3 with x and 2, and 5 with x and -6. Then you get 7x-14+3x+6 = 5x-30, now you just isolate x
kc_kennylau
  • kc_kennylau
Please expand the brackets first :) 7(x-2) is actually 7x-14 3(x+2) is actually 3x+6 5(x-6) is actually 5x-30 So we would have (7x-14) + (3x+6) = (5x-30) Do you understand this step?
countrygirl1431
  • countrygirl1431
yes

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madhu.mukherjee.946
  • madhu.mukherjee.946
did you do the sum?
countrygirl1431
  • countrygirl1431
@kc_kennylau
kc_kennylau
  • kc_kennylau
Then we can expand it furthermore: (7x-14) + (3x+6) is actually (7x-14+3x+6) Therefore (7x-14+3x+6)=(5x-30)
kc_kennylau
  • kc_kennylau
Now we can group the terms with "x" on the Left Hand Side, and the terms without on the Right Hand Side: 7x+3x-5x = -30+14-6
madhu.mukherjee.946
  • madhu.mukherjee.946
(7x-14) + (3x+6) = (5x-30) 10x-8=5x-30 5x=22 x=22/5
countrygirl1431
  • countrygirl1431
thanks

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